28232042568665 has 32 divisors (see below), whose sum is σ = 36499245659520. Its totient is φ = 20839845597696.

The previous prime is 28232042568659. The next prime is 28232042568689. The reversal of 28232042568665 is 56686524023282.

It is a cyclic number.

It is not a de Polignac number, because 28232042568665 - 2⁶ = 28232042568601 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3002445854 + ... + 3002455256.

It is an arithmetic number, because the mean of its divisors is an integer number (1140601426860).

Almost surely, 2^{28232042568665} is an apocalyptic number.

It is an amenable number.

28232042568665 is a deficient number, since it is larger than the sum of its proper divisors (8267203090855).

28232042568665 is a wasteful number, since it uses less digits than its factorization.

28232042568665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23193.

The product of its (nonzero) digits is 66355200, while the sum is 59.

The spelling of 28232042568665 in words is "twenty-eight trillion, two hundred thirty-two billion, forty-two million, five hundred sixty-eight thousand, six hundred sixty-five".